Sealing Gaps in Cinderblock Foundation
This maybe an odd question for this forum but here goes:
I’m about to start framing the interior walls of my double stud construction. My exterior 2×6 stud walls are built on a cinderblock foundation. The portion of the cinderblocks that aren’t covered by the walls (about 2″) are covered with foam insulation, but underneath that foam are the large hollow gaps in the cinderblocks. I’ve attached a couple pics here to describe what I’m talking about.
I know that various critters (bugs, spiders, etc) can come up through those gaps as I’ve seen it happen. My concern is that I don’t want any of those critters living rent free inside by double stud walls, so I need someway of sealing or blocking those gaps so that nothing can get in once the double stud walls are up. I’m going to keep the insulation on there but it doesn’t provide a very good seal so I’ll need to remove the insulation, seal it, then put it back.
I’ve considered using spray foam although that will be a ton of spray foam and probably not the best method. I could also lay something on top such as Tuck Tape but not sure that would hold up long term. Or maybe some 6 mil poly?
Can anyone suggest the best way to seal up or cover these holes? Appreciate any advice!
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